Littelfuse 431 Series User Manual download pdf

SURFACE MOUNT

FUSES

Thin-Film Surface Mount

369

Surface Mount Fuses

www.littelfuse.com

0603 Very Fast-Acting Fuse 431 Series

TIME IN SECONDS

CURRENT IN AMPERES

0.01

0.1

100

10 100

0.001

1.5A

.75A

.5A

.375A

.25A

2.5A

3.5A

1.60 (.063")

.36 (.014")

.79

(.031")

.46 (.018")

R .20 (.008")

.43 (.017") REF.

1.04

(.041")

REFLOW SOLDER

1.02 (.040")

.76 (.030")

1.09 (.043")

2.54

(.100")

Reference Dimensions:

OBSOLETE

• For new designs please use the 434 or 467 Series products.

ELECTRICAL CHARACTERISTICS:

% of Ampere Opening

Rating Time at 25°C

100% 4 hours, Minimum

200% 5 seconds, Maximum

300% 0.2 seconds, Maximum

AGENCY APPROVALS: Recognized under the Components

Program of Underwriters Laboratories and Certified by CSA.

AGENCY FILE NUMBERS: UL E10480, CSA LR 29862.

INTERRUPTING RATINGS:

.25–1A 50 amperes at 32 VAC/VDC

1–5A 35 amperes at 32 VAC/VDC

ENVIRONMENTAL SPECIFICATIONS:

Operating Temperature:

–55°C to 90°C. Consult temperature

rerating chart on page 4. For operation above 90°C contact Littelfuse.

Vibration: Withstands 10-55 HZ per MIL-STD-202F, Method 201A

and 10-2000 HZ at 20 G’s per MIL-STD-202F, Method 204D, Condition D.

Insulation Resistance (After Opening):

Greater than 500,000 ohms.

Resistance To Soldering Heat: Withstands 60 seconds above

200°C up to 260°C, maximum.

Thermal Shock: Withstands 5 cycles of –50°C to 125°C.

PHYSICAL SPECIFICATIONS:

Materials: Body:

Epoxy Substrate

Terminations: Copper/Nickel/Tin-Lead (95/5)

Cover Coat: Conformal Coating

Soldering Parameters:

Reflow Solder— 260°C, 30 seconds maximum

PACKAGING SPECIFICATIONS: 8mm Tape and Reel per

EIA-RS481-1 (IEC 286, part 3); 5,000 per reel, add packaging suffix, NR.

PATENTED

ORDERING INFORMATION:

For New Designs Use 434 or 467 Series.

Nominal

Catalog Ampere Voltage Resistance Melting I

Number Rating Rating Cold Ohm

Sec.)

431.250 0.25 32 0.375 0.0030

431.375 0.375 32 0.265 0.0053

431.500 0.5 32 0.193 0.0087

431.750 0.75 32 0.114 0.0171

431 001 1 32 0.072 0.0210

431 01.5 1.5 32 0.048 0.0526

431 002 2 32 0.036 0.104

431 02.5 2.5 32 0.028 0.175

431 003 3 32 0.023 0.198

431 03.5 3.5 32 0.019 0.265

431 004 4 32 0.017 0.352

431 005 5 32 0.013 1.600

Measured at 10% of rated current, 25°C.

Average Time Current Curves

OBSOLETE 1

Summary of Contents

Page 1 - OBSOLETE

10SURFACE MOUNTFUSESThin-Film Surface Mount369Surface Mount Fuseswww.littelfuse.com0603 Very Fast-Acting Fuse 431 SeriesTIME IN SECONDSCURRENT IN AMPE

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Littelfuse 431 Series User Manual

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